Batman: The Long Halloween - The Last Halloween — DC Comics
Issue: #5
IT'S VALENTINES DAY IN GOTHAM! Hehehehehehehehahahahahahahahahaahahahahaahaha! Guess who has a special Valentine's Day present for Gotham City?!
Creators: Jeph Loeb, Bill Sienkiewicz, Dave Stewart, Richard Starkings, Tim Sale, Marie Javins